Participants in this single-blind study will be randomly assigned to receive either standard CBT with EX/RP or CBT with EX/RP plus MI. All participants will report to the study site twice weekly for both therapy and assessments for a total of 2 months. Assessments will include interviews and self-rating forms. No medication will be administered during this study. However, participants will continue on any medication that they are taking at the time of study entry. All participants will be assessed for outcomes upon study completion. Participants who respond to therapy will be assessed again 6 months following study completion.